MeasureThat.net

Run results for: undefined vs. typeof vs. in vs. hasOwnProperty

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:62.0) Gecko/20100101 Firefox/62.0
Firefox 62
Mac OS X 10.13
Desktop
6 years ago
Test name Executions per second
undefined 134161312.0 Ops/sec
typeof 276367936.0 Ops/sec
in 189548944.0 Ops/sec
hasOwnProperty 192928640.0 Ops/sec
bool 269218976.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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